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Modelling Star Formation in Ophiuchus

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The Labyrinth of Star Formation

Part of the book series: Astrophysics and Space Science Proceedings ((ASSSP,volume 36))

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Abstract

We perform simulations of prestellar core collapse with initial conditions inferred from observations of Ophiuchus. The cores in Ophiuchus are mostly isolated, hence we run multiple simulations of individual cores. We statistically model the intrinsic shapes of cores as a population of triaxial ellipsoids with a single free parameter which is fitted to aspect ratio data. We assume a turbulent velocity field with modifications which add ordered radial and rotational motion. Mass, size and non-thermal velocity dispersion are drawn randomly from observational data. Preliminary results show a largely realistic IMF. Future work will explore solenoidal to compressive velocity mode ratios and the effects of accretion luminosity. Results will lead to inferences on quantities such as star formation efficiency in the region.

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Author information

Authors and Affiliations

  1. Cardiff School of Physics and Astronomy, Cardiff University, Queens Buildings, 5 The Parade, Cardiff, CF24 3AA, UK

    Oliver Lomax, Anthony Peter Whitworth & Annabel Cartwright

  2. Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, UK

    Dimitris Stamatellos

  3. Max-Planck-Institut für Astrophysics, Garching-bei-München, 422, Germany

    Stefanie K. Walch

Authors
  1. Oliver Lomax
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  2. Anthony Peter Whitworth
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  3. Annabel Cartwright
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  4. Dimitris Stamatellos
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  5. Stefanie K. Walch
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Corresponding author

Correspondence to Oliver Lomax .

Editor information

Editors and Affiliations

  1. Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, United Kingdom

    Dimitris Stamatellos

  2. Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom

    Simon Goodwin

  3. Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, United Kingdom

    Derek Ward-Thompson

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© 2014 Springer International Publishing Switzerland

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Lomax, O., Whitworth, A.P., Cartwright, A., Stamatellos, D., Walch, S.K. (2014). Modelling Star Formation in Ophiuchus. In: Stamatellos, D., Goodwin, S., Ward-Thompson, D. (eds) The Labyrinth of Star Formation. Astrophysics and Space Science Proceedings, vol 36. Springer, Cham. https://doi.org/10.1007/978-3-319-03041-8_20

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